Ultra-high temperature Ti-Hf-Zr-Ni-Cu-Co shape memory alloy

被引：1
|
作者：
Resnina, N. [1 ]
Belyaev, S. [1 ]
Ponikarova, I. [1 ]
Sibirev, A. [1 ]
Bazlov, A. [1 ,2 ]
Bikbaev, R. [1 ]
Ivanov, A. [1 ]
Kalganov, V. [1 ]
机构：
[1] St Petersburg State Univ, Univ Skaya nab 7-9, St Petersburg 199034, Russia
[2] Natl Univ Sci & Technol MISIS, 4,bld1,Leninskiy pr, Moscow 119049, Russia
来源：
MATERIALS LETTERS | 2024年 / 370卷
基金：
俄罗斯科学基金会;
关键词：
High-temperature shape memory effect; Martensitic transformation; Multi-component alloys;
D O I：
10.1016/j.matlet.2024.136847
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new Ti 9 Hf 39 Zr 4 Ni 30 Cu 9 Co 9 shape memory alloy was developed that underwent the two stages B2 <-> B19 ' martensitic transformation at ultra -high temperatures: M s = 419 degrees C, M f = 286 degrees C, A s = 447 degrees C, and A f = 562 degrees C. Thermal cycling in a range of 100 - 600 degrees C decreased the transformation temperature but did not suppress the transformation. The strain accumulation was found on cooling under stress and the strain recovery was observed on heating without stress. An increase in the stress acting on cooling from 140 MPa to 460 MPa increased the recoverable strain from 0.9 % to 3.5 %.
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页数：4
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